James a



(No Model.)

J. A. BOALS.

DLVIGB POB. RALSING OIL PROM oIL WELLS.

Patented May 31, 1887. .Y

WIL

N. Pneus, Pnowumogmpher. wnshinglon D. c4

UNITED STATES PATENT Ormea,

JAMES A. BOALS, OF MODON ALD, PENNSYLVANIA, ASSIGNOR IO THE PNEUMATIO MACHINE AND OIL COMPANY, OF SAME PLACE.

DEVICEFOR RAISING OIL PROM OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 364,084, dated May 31, 1.887.

O Application filed January 2l, ISST. Serial No. 22."r030 (No model.)

To all whom i may concern:

Be it known that I, JAMES A. BoALs, a citizen of the United States, and a resident of Mc- Donald ,in the count-y of Vashington and State of Pennsylvania, have invented certain new and useful Improvements in Devices for Raising Oil from Oil-Wells; and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the-art to which it appertains to make and use the same, vreference being had to the accompanying drawings, which forma part of this specification, and in whieh Figure 1 is a sectional view of my improved device for raising oil from oil-wells, showing the device in operation. Fig. 2 is an enlarged perspective detail View of the distributingvalve, showing portions of the casing broken away; and Fig. 3 is asimilar view of the sliding link connecting the valve-operating arms or levers.

Similar numerals f reference indicate corresponding parts in all the figures.

My invention has relation to that class of devices for raising oil from oil-wells in which a fluid medium-snch as natural gas or compressed air-is brought to bear upon the surface of the oil in the well, raising the oil through a pipe; and it consists in the improved construction and combination of parts of such a device, in which the oil rising in a" tank and arriving at its highest level will cut off the supply of the forcing medium, and in which the emptying of the tank will again cause the supply of the forcing medium to be automatically let on, as'hereinafter more. fully described and claimed.

pipe, 4, entering it at its'top, the said inletpipe extending down into the well '5, and having an upwardly-opening valve, 6, at itslower end.

the stem being guided outside` of the tank by The tank is formed with an aperture, 7, in"

guide-bearings 10. The stem of the float has a link, 1l, or cross-head sliding in its slot 12, the said link having shoulders 13 bearing against the edges of the slot, and the ends of two levers or arms', 14 and 15, are pivoted to the bifurcated ends of the link, the ends of the arms or levers having pins 16 sliding in longitudinal slots 17 in the bifurcaled ends of the rink. l

The lever 14 is fulcrumed at its middle upon an upright,18,supporting' one end ofthe guidebearings, the other ends of the guide-bearings being supported by an upright supply-pipe, 19, and a rod, 20, is pivoted with its upper end to the outer end of the lever, and has its lower end pivoted to the lever or handle, 21, of a valve, 22, upon the outlet-pipe, the said valve being near to the tank. An outwardlyopening check-valve, 23, is secured in ythe outlet-pipebetween the tank and the joint, at

which the overflow-pipe en ters the outlet-pipe,

and serves to prevent any backtlow of the oil into thetank.

A valve-casing,2-l, havinga cylindrical bore, 25, is supported above the tank, and has the lower end of the upright supply-pipe 19 entering its upper side, and a horizontal forcepipe, 26, and an outlet-pipe, 27, entering its side, the outlet-pipe entering below the forcepipe.

A cylindrical valve, 28, ts and revolves in the valve-casing, and has a portion of'its upper side cutaway to form a rounded recess,

29, andthe lever or arm 15 las its inner end secured to the stem 30 of the valve, turning the valve as it is rocked.

- The horizontal force-pipe' is formed with a into the well-casing, the valve being in the position shown in the drawings, the float being 5 the tank. The iioat will be raised upon the surface of the oil in the tank, and the stem of A the float will slide with its slot upon the link connecting the operating-levers, as the oat rises, until the lower end of the slot in the rising stem of the float strikes the link, when the distributing-valve will be tiltedv so as to bring its recess to gradually eut off the supply of forcing medium, and at the same time bring the forcing-pipe and the outlet-pipe in vcornmunication with each other, allowing the forcing medium in the well-easing to escape and make room for the rising oil in the same. The valve upon the outlet-pipe will at the same time be opened bythe lever and connectingrod, so that the .oilV will flow out of the tank, and when all the oil is out of the tank and the float has fallen to its lowermost position the forcing operation may again take place.

The tank is preferably smaller or of a less capacity than the well-casing, so that the float will shut off the supply of forcing material and open the outlet before all the oil collected in the well-casing has been forced up, the surplus forced into the tank flowing out through the overflow-pipe, and the tank being smaller than the well-easing will insure the prompt working of the distributing-valve and of the outlet-valve, the said valves being gradually. closed and opened as the float arrives to the extremes of its stroke.

By this device oil may be raised ont of wells in which the pressure of the natural gas in the well is not sufficient to raise the oil, anditwill be seen that instead of using the device in an oil-well the forcing-pipe and the raising-pipe or inlet-pipe may be inserted into a tank or receptacle immersed in water in a pond or stream, and having suitable means yfor letting in the water, compressed air, or even steam, being'suitable for the forcing medium.

The lioat is of a sufficient size to cover the aperture-in the top of the tank for the passage of thc stem, the upper side of the float fitting against the aperture and covering it when the tank is filled and the oil would otherwise flow out through the aperture, the upper side of the l. In a device for raising oil out of oil-wells, the combination of a receiving-tank having an inlet-pipe at the top and an outlet-pipe kat the bottom, a casing in the Well having its top tightly closed, and having the inlet-pipevfor the tank extending to its bottom, va forcing-pipe for conveying a forcing medium into the welleasing, a oat in the tank, and suitable connections from the float to a distributing-valve for the forcing medium and to a valve for the outlet-pipe, the said valves being respectively closed and opened, and vice versa, at the uppermost and lowermost extremes of the stroke of the tioat, as and for the purpose shown and set forth.

2. In adeviee for raising oil outof oil-wells, the combination of a receiving-tank having an inlet-pipe at the top and an outlet-pipe at the bottom, a casing in the well having the top tightly closed, and having the inlet-pipe for the tank extending to its lower end, a forcingpipe entering the well-casing and supplying a forcing medium, and means for automatically opening and closing the supply of forcing medium and closing and opening the outlet-pipe as the tank is emptied or lled, as and for-the purpose shown and set forth.

3. In a device for raising oil out of oil-wells, the combination of a receiving-tank having an inlet-pipe at its top and anoutlet-pipe at its bottom, provided with a valve, a easing in the well formed with a closed top, and having the lower end of the inlet-pipe for the tank cxtending into it to the bottom, a supply-pipe for the forcing medium entering the closed top of the well-casing, avalve, an outlet-pipe, a float having a stem sliding through an aperture in the top of the tank, and suitable means for connecting the stem to the distributingvalve upon the supply-pipe and to the outletvalve, closing the former and opening the latter at the upstroke, and vice versa at the downstroke, as and for the purpose shown and set forth.

4. In adevice for raising oil ont ofoil-wells, the combination of a receiving-tank having an inlet-pi`p`e at its top and an outlet-pipe at its bottom, provided with an voutlet-valve, a casing in the well having its top closed,and'hav ing the inlet-pipe for the tank passing through the closed top toward the bottom,a supplypipe for the forcing medium, a valve, an outlet-pipe, a float having its longitudinallyslotted stem sliding in an aperture in the top of the tank, a link sliding in the slot, a lever or armpivoted to one end of the link and secured at its other end to the stem of the distributingvalve, and a lever pivoted above the top of the tank, and having its inner end pivoted to the IOO IIO

other end of the link, and having aconnecting-rod pivoted to its outer end and to the handle ofthe outlet-valve, as and for the purpose shown and set forth. Y

5. In a device for raising oil out of oil-wells, the combination of a. receiving-tank having an inlet-pipe at its upper end and an overflowpipe at theupper end, and having an outletlpipe at the bottom, provided vvith an outletvalve and with'an outwardly-opening checkvalve, and having the overflow-pipe entering e it outside of the check-valve, a casing in the shoulders tting against the edges of the slot, a .lever pivoted with a pin sliding in slots to one end of the link and secured at the other end to the stem of the cylindrical valve, a lever fulcruined above thetop of the tank,and having its inner end pivoted with a pin sliding in the end of the link, and a connectingy rod pivoted to the outer end of the lever and to the handle of the outlet-valve, as and for the purpose shown and set forth. l

In testimony that I claim the foregoing as my own have hereunto affixed my signature in presence of two Witnesses.

JAMES A. BOALS. Witnesses:

WILLIAM WRIGHT, WILL-IAM HERRON. 

